Spearhead nozzle



Navo 19, 946,

w. RUNDLE ET AL Zf 1,2%

SPEARHEAD NOZ ZLE Filed May 18, 1944 Syvum/MM5 M7/,2M @h Patented Nov.19, 1946 `OFFICE.

SPEARHEAD NOZZLEI Walter Rundle, Berea, and Harold E. Bruce,

Elyria, Ohio Application May 18, 1944, Serial No. 536,134

3 Claims.

The present invention relates to a re fighting implementJ comprising aSpearhead nozzle adapted for penetrating walls, ceilings, the sides ofan airplane fuselage, and other objects for the purpose of introducing astream of water or chemical to the interior of a burning structure.

An important object of the present invention is to provide a Spearheadnozzle of this character adapted for connection on a pipe section bymeans of which the nozzle may be driven through a wall of a burningstructure, the Spearhead formation of the nozzle serving to retain thelatter in position in the wall without necessitating the holding of theSame by the fireman.

The invention further comprehendsthe construction of a nozzle of thischaracter adapted for attaching to a re fighting axe having a hollowhandle adapted for supplying water to the nozzle and by means of whichthe nozzle may be driven into the wall of a burning structure throughthe usual action of swinging the axe.

A still further object is to provide a nozzle of this character to whicha funnel member may be attached for fighting open fires.

An additional object is to provide a device of this character of simpleand practical construction, which is eicient and reliable inperformance, relatively inexpensive to manufacture and otherwise welladapted for the purposes for which the same is intended.

Other objects and advantages reside in the details of construction andoperation as more fully hereinafter described and claimed, referencebeing had to the accompanying drawing forming part hereof, wherein likenumerals refer to like parts throughout, and in which:

Figure 1 is a side elevational view of the nozzle.

Figure 2 is a longitudinal sectional view therethrough.

Figure 3 is Aan end elevational View.

Figure 4 is a side elevational view showing the funnel member attachedto the nozzle and with parts broken away and in section.

Figure 5 is a fragmentary side elevational view of the nozzle attachedto a fire fighting axe.

Referring now to the drawing in detail, and rst with respect to the formof the invention illustrated in Figures 1 to 3, inclusive, the numeral 5designates the nozzle generally, which is of tapering form havinglongitudinally extending cutting edges 6 formed on the sides of thenozzle and spaced circumferentially at Substantially 90 degrees fromeach other, as shown in Figure 3 of the drawing. The front ends of thecutting edges 6 taper to a substantially sharpened point 1 and thecutting edges 6 are longitudinally rounded, as shown in Figures 1 and 2,Substantially in the form of a Spearhead which is wider at its centralportion.

The sides of the nozzles between adjacent cutting edges 6 are curved toform channels 8 and the front portions of the channels are formed withelongated recesses 9 tapering toward their front ends and with the rearportions of which orifices I 0 communicate leading from the chamber I Iat the interior of the nozzle.

The rear end of the nozzle is formed with a threaded stem I2 to whichone end of a pipe I3 may be attached by means of a union or coupling I4.

A collar I5 is threaded on the Stem I2 between the rear end of thenozzle and the union M and the collar may be of hexagonal lform toreceive a Wrench and the collar may be cast integral with the nozzle 5,or may be constructed as a Separate unit and secured thereto by means ofa set screw The collar I5 may also be externally threaded, as shown atIl in Figure 4, for threaded connection with the rear end of a funnelmember I8 into which the nozzle projects for use in eX- tinguishingoutside fires.

By attaching the nozzle 5 to the end of a pipe section i 3, the same maythen be used as a spear or harpoon for driving the nozzle into the wallof a burning object or Structure, the Spearhead formation of the nozzleServing to retain the nozzle in position in the wall withoutnecessitating the holding of the Same by a fireman. Water or suitablechemicals may then be discharged through the nozzle for extinguishingthe fire on the interior of the structure.

The pipe section I3 may be covered with a hose or other material, asshown at I9 in Figure 4.

In Figure 5 of the drawing we have illustrated a fire fighting axe 26 tothe head of which the nozzle 5 may be attached by` threading the stem I2therein, the axe being provided with a hollow handle 2| and the head 2Dlikewise being hollow to provide communication or connection between thehandle and the nozzle, In using this form of the invention, the axe maybe swung in the usual manner for driving the nozzle into the wall of anobject for extinguishing the re therein.

It is believed the details of construction and manner of operation andadvantages of the device will be readily understood from the foregoingWithout further detailed explanation.

Having thus described the invention, what we claim is:

1. A re ghting nozzle adapted to be attached to a conduit forfire-extinguishing iluid comprising a Spearhead-shaped hollow body, aplurality of longitudinally extending cutting edges formed on the body,said body having longitudinally extending channels in the sides thereofbetween said cutting edges, said channels having recesses in the frontends thereof and orices communicating With tlife recesses leading fro-mthe interior of the body.

2. A re ghting nozzle adapted to be attached to a conduit forfire-extinguishing iluid comprising a Spearhead-shaped hollow body, aplurality of longitudinally extending arcuate, diametrically opposedcutting edges formedlongitudinally on the body, defining longitudinallyextending chan- 4 nels in the4 sides of the body, said channels havingrecesses in the front ends thereof and orifices communicating with therecesses leading from the interior of the body.

3. A re ghting nozzle adapted to be attached to a conduit comprising aSpearhead-shaped hollow body, a plurality of longitudinally extendingcutting edges formed on the body, said body being concaved between saidcutting edges, `and having longitudinal recesses in the front'ends ofthe concave portions ofthe body and orifices communieating with therecesses leading from the interior of the body.

